• 2022-06-30
    双纽线[img=156x27]1803d359de49242.png[/img]所围成的区域面积可用定积分表示为( )
    A: [img=102x52]1803d359ec8cf52.png[/img]
    B: [img=100x52]1803d359f5dec70.png[/img]
    C: [img=91x52]1803d35a0426cbd.png[/img]
    D: [img=89x52]1803d35a0c79d4b.png[/img]